I am going to route of a mechanical pump for my olds 455. now, question 1, any particular brand? holley, clay smith, mr. gasket, etc. question 2, what size lines from the tanks to the pump, and pump to carb? question 3, is 80 gph enough, or do I need to go higher. motor is mildy built. I see that most 80 gph have 1/4 inlet/outlet, and 110 and above have 3/8. difference??? thanks ya'll!